Towards the end of project, with a change of developer, the foyer space was designed by John Burgee, noted as a pioneer of postmodern architecture.

[1] It overtook Rialto Towers and became the tallest building in Melbourne and Australia until August 1991, when 120 Collins Street was completed.

The building contains double glazed windows with surface coated tempered glass to increase thermal efficiency.

A large part of the site for 101 was created by demolishing the 26 floor CRA Building, the tallest in the city in the mid 1960s.

[4] The owners of 101 Collins have implemented a strategy of buying adjacent properties to safeguard the building's views, particularly towards the south.